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WO1996019621A1 - Systeme de traitement ameliore des eaux residuaires - Google Patents

Systeme de traitement ameliore des eaux residuaires Download PDF

Info

Publication number
WO1996019621A1
WO1996019621A1 PCT/US1995/016287 US9516287W WO9619621A1 WO 1996019621 A1 WO1996019621 A1 WO 1996019621A1 US 9516287 W US9516287 W US 9516287W WO 9619621 A1 WO9619621 A1 WO 9619621A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
sewage
housing
liquid level
level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1995/016287
Other languages
English (en)
Inventor
Darrel S. Oliver
Deborah Carol Wynn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tarby Inc
Original Assignee
Tarby Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tarby Inc filed Critical Tarby Inc
Priority to AU45184/96A priority Critical patent/AU4518496A/en
Priority to MXPA/A/1997/004607A priority patent/MXPA97004607A/xx
Publication of WO1996019621A1 publication Critical patent/WO1996019621A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7313—Control of outflow from tank

Definitions

  • sewage generated in a building, home, commercial structure or otherwise flows by gravity from a sewage drain extending from a building to a sewage drain collection system, into sewage mains which ultimately connect to a sewage treatment plant.
  • sewage treatment plant the sewage is treated so that environmentally acceptable effluents can be released.
  • This basic concept requires the sewage treatment plant to be at a lower level than all of the buildings in which sewage is generated. While this can be accomplished in many instances, frequently there arises the need for a sewage treatment system which is located in such a way that total gravity drainage cannot be employed. For instance, if a home is constructed in an area wherein a hill or a valley lies between it and a gravity sewage draining system then some method must be provided for conveying the sewage under pressure to the point where it can be connected with a gravity drainage system.
  • pressure sewage systems are provided for collecting sewage drained from a home or other type of building, or toilet facilities, to a collection point where the sewage is pumped, under pressure, through a line that ultimately connects with a gravity sewage drainage system or to a sewage treatment facility.
  • a collection system including a grinder pump the sewage may not only be moved under pressure but a grinder pump makes it possible to use substantially smaller diameter sewage transport pipes extending between the sewage collection site and the sewage gravity flow system than can normally be employed where gravity alone is relied upon for moving sewage.
  • sewage handling systems including grinder pumps are well-known.
  • the disclosed invention herein provides an improved sewage handling system.
  • the system includes a sewage collection tank with sidewalls, enclosed bottom and an open top, the sidewall has a sewage inlet opening that is connected to a home, a building or any other type of structure having one or more toilets therein that produce sewage.
  • sewage is drained through the sewage inlet opening into the collection tank.
  • the tank has a top plate with a central opening therethrough.
  • An electric motor driven sewage grinder pump is supported by a pump housing, the pump housing being dimensioned to removably pass through the top plate central opening.
  • the pump has a discharge outlet.
  • a pump housing flange is affixed to an upper end of the pump housing.
  • the flange has a diameter greater than the top plate central opening so that the pump housing is removably supported within the sewage collection tank.
  • a discharge conduit is connected to the pump discharge outlet and extends upwardly through an opening in the pump housing flange.
  • An upright manway housing having a lower open end, an open top and a sidewall.
  • the lower end of the manway housing is affixed and sealed to the top plate. Piping within the manway housing connects the discharge outlet with a housing sidewall outlet opening.
  • a removable top cover closes and seals the manway housing open top.
  • a liquid level detector is supported by the pump housing and extends downwardly and parallel to the sewage grinder pump, the level detector extends within the lower sewage collection tank.
  • the liquid level detector serves to detect and provide circuit actuation at three liquid levels.
  • the first level is a liquid lower level at which the sewage grinder pump is turned off.
  • the second level is an intermediate level at which the sewage grinder pump is turned on.
  • the third level is a high level that is reached only when the sewage grinder pump has failed to pump sewage from the collection tank upon the sewage reaching the intermediate level.
  • a warning signal conductor extends through the manway housing sidewall and into the pump housing and connects to a circuit that is responsive to the liquid level detector for providing a warning signal when the liquid level in the sewage collection tank reaches the high level as detected by the third position of the liquid level detector.
  • the improved sewage handling system provides a unique and improved way of supporting a liquid level detector and a sewage grinder pump housing in a unitary arrangement with an integral flange so that the major components of the sewage system can be suspended from a single structure.
  • the flange is preferably formed of plastic to thereby resist corrosion in the harsh environment in which the system is employed.
  • Figure 1 is an elevational cross-sectional view of the improved sewage handling system showing an upper manway housing with a manway cover and a lower sewage collection tank having within it a sewage grinder pump and a liquid level control.
  • Figure 2 is an enlarged cross-sectional view of the sewage grinder pump as supported in the pump housing that is suspended within the sewage collection tank and showing a closure member for closing the pump motor housing.
  • the closure member includes an integral flange and downwardly extending integral tubular extensions.
  • the first tubular extension receives a motor housing that contains the sewage grinder pump motor with the sewage grinder pump supported at the motor housing lower end.
  • the other closure member tubular extension receives a liquid level detector that is supported adjacent to and paralleled to the motor housing.
  • the system includes a manway housing 10 that has an upper open end 12 positioned at ground level 14.
  • the upper open end 12 is closed by manway cover 16.
  • the lower end 18 of manway housing 10 is supported by a plate 20 and below it is a sewage collection tank 22.
  • the upper open top 24 of sewage collection tank 22 attaches to plate 20.
  • the bottom 26 of sewage collection tank 22 is closed, and the bottom portion is preferably tapered at 28.
  • a grinder pump housing and grinder pump assembly Positioned within the interior of sewage collection tank 22 is a grinder pump housing and grinder pump assembly, generally indicated by the numeral 30, that is illustrated in greater detail in the cross-sectional view of Figure 2, to which reference will now be made.
  • the grinder pump assembly 30 includes a pump housing 32 having an open top end 34, the pump housing lower end 36 being closed by bottom plate 38 that has an opening 40 therethrough.
  • a pump motor 42 Positioned within housing 32 is a pump motor 42 having a shaft 44 that extends through opening 40.
  • Affixed to the lower end of bottom plate 38 is a grinder pump 46.
  • the pump has a lower grinding head 48 and, above that, a positive displacement progressing cavity pump 50.
  • a discharge cavity 52 having an outlet opening 54.
  • a spring actuated seal system 56 is positioned about shaft 44 to prevent sewage from entering the interior of pump housing 32 through opening 40.
  • a closure member 58 is employed.
  • closure member 58 which preferably is cast of plastic material, has an integral radially extending flange 60 that, when the unit is installed, rests on the top of plate 20 as shown in Figure 1.
  • the entire grinder pump assembly 30 is removable through an opening 62 in plate 20.
  • closure member 58 includes a downwardly extending tubular portion 64 that telescopically receives upper end 34 of pump housing 32.
  • An integral septum 66 formed as a part of closure member 58 functions to close upper end 34 of pump housing 32.
  • Pump housing 32 may be secured to downwardly extending tubular portion 64 by threaded attachment or by sealably bonding housing 32 to tubular portion 64 so as to create an air tight environment for pump motor 42.
  • Air valve 68 is placed into septum 66.
  • Air valve 68 is of the type employed for pressuring tube-less tires so that a source of air pressure may be applied through the valve to form positive air pressure within the interior of pump housing 32.
  • closure member 58 An important aspect of closure member 58 is the provision of an integral liquid level switch detector portion 70 providing an opening 72 having a lower end 74. Supported within opening 72 is the upper end 76 of an elongated liquid level detector 78. Detector 78 has provisions for providing electrical signals in response to three fluid levels. The first is a lower band 80. A signal is generated when the level falls below lower band 80. This signal is used in a circuit to turn pump motor 42 off, if the motor is running to pump fluid from collection tank 22. A second level detector band 82 is spaced above lower band 80. An electrical signal generated by the switch when liquid level reaches band 82 functions to turn motor 42 on to thereby energize pump 46 to reduce the level of fluid within sewage collection tank 22.
  • a third detector band 84 spaced above second detector band 82 provides an electrical signal used for indicating an emergency condition. That is, when the liquid level within sewage collection tank 22 reaches the level of third band 84, a warning or danger signal is provided since the fact that the level has reached that which is detected by the third detector band 84 indicates that the system has not functioned to maintain the proper maximum level within collection tank 22. Therefore, some problem exists which must be addressed, otherwise sewage will continue to collect until collection tank 22 is completely filled, at which time it will back up in the sewage collection lines leading to the tank and, ultimately, into toilet facilities from which the sewage is originated.
  • Detector bands 80, 82 and 84 of level detector 78 can function in a variety of ways to indicate fluid level.
  • a common means employed for detecting fluid level is if bands 80, 82 and 84 are conductive so that conductance of a circuit increases when the fluid level contacts the bands.
  • Bands 80, 82 and 84 may function to detect liquid level by change in capacitance that occurs in the presence of the liquid to provide signal information to circuitry for control of the operation of motor pump 42 and for providing a warning signal.
  • septum 66 within closure member 58, which is spaced well below flange 60, provides an internal space 86 in which a control circuit 88 is positioned.
  • the control circuit has conductors 90 extending to detachable connector
  • a cover plate 98 removably closes the upper end of closure member 58, the cover plate having a seal conductor passageway 100 therein whereby a cable 102 passes.
  • Cable 102 serves to supply electrical energy for circuit 88 by which motor 42 is operated as well as to carry a conductor for providing an emergency signal.
  • An emergency signal can be generated in a remote location, such as within a house from which sewage is taken to drain into sewage collection tank 22.
  • the signal device (not shown) may be a noise generator, such as a bell or horn or a light.
  • a check valve 106 is provided within conduit 104 to resist the flow of sewage back through the pump and into sewage collection tank 22 when motor 42 is not energized.
  • a manual control valve 108 is provided in line 104 so that when it is necessary to remove the grinder pump assembly 30, valve 108 can be closed to prevent sewage from backing up through the line.
  • a connection 110 is attached to the end of conduit 104 to receive a sewage conduit (not shown) by which sewage under pressure is carried away from the system.
  • Such sewage conduit typically traverses a distance necessary so that the outer end thereof is connected to a gravity sewage collection system or other sewage disposal system.
  • sewage collection tank 22 has a sewage inlet 112.
  • a sewage drain pipe (not shown) extending from a home, office, shop or other type of building having one or more toilet facilities connects by gravity flow to sewage inlet 112 where sewage is delivered into the interior of sewage collection tank 10.
  • junction box 114 Positioned within the interior of manway housing 10 is junction box 114 by which flexible conductor 102 is connected to conduits 116 and 118.
  • Conduit 116 connects to a power source whereby electrical energy is supplied to pump motor 42 and circuitry 88.
  • Conduit 118 contains conductors for carrying an emergency indicating signal when the fluid level within sewage collection tank 22 reaches third band 84 of level detector 78 to provide a warning signal.
  • the sewage collection system herein provides a unique, economical and highly effective way of mounting a pump motor housing 32 in conjunction with a vertical liquid level detector 78, both supported by an integral closing member 58 in an arrangement wherein these components are supported in contiguous side-by-side relationship for easy assembly and for removal for repair or maintenance.
  • the improved combination of a liquid level detector and motor housing all mounted and extending from the same integral closure member 58 assures simplicity of installation and reduces the possibility of failure of the system.
  • the system of this disclosure is particularly advantageous when compared with systems that employ float actuated liquid detectors with their attendant mechanical operating features that are subject to wear and failure.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

Une pompe à broyeur d'évacuation des eaux résiduaires est utiliser pour le transport des eaux résiduaires et comporte un carter de moteur (32) cylindrique orienté verticalement, une plaque inférieure (38) fixée au carter du moteur (32) qu'elle ferme, un moteur (42) soutenu par la plaque inférieure (38) à l'intérieur du carter du moteur (32), le moteur (42) étant pourvu d'un arbre (44) passant par un orifice (40) de la plaque inférieure (38), une pompe à broyeur (46) soutenue à une extrémité inférieure de la plaque inférieure (38) et raccordée à l'arbre du moteur (44), un élément de fermeture (58) fixé à l'extrémité supérieure (34) du carter du moteur de la pompe et comportant une section (70) logeant un détecteur de niveau (72) et présentant une ouverture destinée au détecteur de niveau, à l'extérieur du carter du moteur (32), un détecteur de niveau de liquide allongé (78) dont une extrémité supérieure (76) est logée dans ladite ouverture (74 de 72), et un circuit (88-94) se raccordant au détecteur (78) afin de commander le moteur (42) et d'entraîner la pompe à broyeur (46) en réponse au niveau de liquide détecté.
PCT/US1995/016287 1994-12-20 1995-12-14 Systeme de traitement ameliore des eaux residuaires Ceased WO1996019621A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU45184/96A AU4518496A (en) 1994-12-22 1995-12-14 Improved sewage handling system
MXPA/A/1997/004607A MXPA97004607A (es) 1994-12-20 1995-12-14 Forro de intersujecion para una unidad deagitacion exterior para articulos vaciados

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/361,292 1994-12-22
US08/361,292 US5553794A (en) 1994-12-22 1994-12-22 Sewage handling system

Publications (1)

Publication Number Publication Date
WO1996019621A1 true WO1996019621A1 (fr) 1996-06-27

Family

ID=23421448

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/016287 Ceased WO1996019621A1 (fr) 1994-12-20 1995-12-14 Systeme de traitement ameliore des eaux residuaires

Country Status (3)

Country Link
US (1) US5553794A (fr)
AU (1) AU4518496A (fr)
WO (1) WO1996019621A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1972792A3 (fr) * 2007-03-17 2010-03-31 GARDENA Manufacturing GmbH Ensemble pompe submersible
CN107254910A (zh) * 2017-07-31 2017-10-17 山东中车华腾环保科技有限公司 适用分散型污水处理设施污水排放一体化提升设备及方法

Families Citing this family (29)

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Publication number Priority date Publication date Assignee Title
US5519554A (en) * 1994-11-17 1996-05-21 Storage Technology Corporation Rack and pinion linear slide read/write head positioning device
US5825109A (en) * 1994-11-30 1998-10-20 Calumet Armature & Electric Co. Vehicular oil cooled alternator with stator coil terminal assembly terminal assembly kit and method
US5924846A (en) * 1997-06-20 1999-07-20 Crane Pumps & Systems, Inc. Cover for sewer basin having integral control housing
US6059208A (en) * 1997-09-11 2000-05-09 Interon Corporation Buried plastic sewage sump
US6076399A (en) * 1997-10-30 2000-06-20 Crane Pumps & Systems, Inc. Level switch filter for sewer basin
US6202675B1 (en) 1998-05-18 2001-03-20 Robert A. Forte Lift station flood control system
US6010086A (en) * 1998-07-02 2000-01-04 Enviroment One Corporation Grinder pump
US6305410B1 (en) * 1999-04-28 2001-10-23 Liberty Pumps Sewage ejector basin and assembly
US6481973B1 (en) 1999-10-27 2002-11-19 Little Giant Pump Company Method of operating variable-speed submersible pump unit
US6343752B1 (en) 1999-12-07 2002-02-05 Environment One Corporation Indoor wastewater disposal system and tank therefor
US6638023B2 (en) * 2001-01-05 2003-10-28 Little Giant Pump Company Method and system for adjusting operating parameters of computer controlled pumps
FR2822484B1 (fr) * 2001-03-22 2003-09-05 Seardi Pompage Dispositif de relevement d'eaux usees
US6615866B2 (en) 2001-09-13 2003-09-09 Morrell Incorporated Hydraulic power assembly having a removable top
EP1329732A1 (fr) * 2002-01-18 2003-07-23 Agilent Technologies, Inc. (a Delaware corporation) Détermination de l'atténuation de câble et de la perte d'un signal du seuil
US20050034383A1 (en) * 2003-08-13 2005-02-17 Allen Ronald K. Sump overflow protection system
EP1789638A1 (fr) * 2004-08-02 2007-05-30 Environment One Corporation Reservoirs d'eaux usees et systemes a pompe broyeuse
US20060060685A1 (en) * 2004-09-17 2006-03-23 Crane Pumps Grinder pump system
DE102004058863A1 (de) * 2004-12-06 2006-06-08 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH Adapter zur Elektrolytzufuhr für einen potentiometrischen Sensor
US8523532B1 (en) 2005-03-29 2013-09-03 Liberty Pumps, Inc. Sewage handling system, cover, and controls
US7520736B2 (en) * 2005-03-29 2009-04-21 Liberty Pumps Inc. Sewage handling system, cover, and controls
US8297119B2 (en) * 2005-06-16 2012-10-30 Multitrode Pty Ltd Liquid level monitoring apparatus and methods
AU2006257719B2 (en) * 2005-06-16 2011-10-13 Multitrode Pty Ltd Liquid level monitoring apparatus and methods
US8074911B2 (en) * 2007-05-14 2011-12-13 Environment One Corporation Wireless liquid level sensing assemblies and grinder pump assemblies employing the same
US7802741B2 (en) 2007-05-14 2010-09-28 Environment One Corporation Pump assemblies having a quick-release latching mechanism and methods for securing pump assemblies in a tank
USD594491S1 (en) 2007-05-14 2009-06-16 Environment One Corporation Grinder pump assembly
US9004381B2 (en) * 2009-06-23 2015-04-14 Zoeller Pump Company, Llc Grinder pump basin system
EP2351933A1 (fr) 2010-01-06 2011-08-03 Häny AG Dispositif d'acheminement des eaux usées doté d'un système hydraulique à pompes à vis sans fin excentriques
US10238759B2 (en) * 2015-05-13 2019-03-26 Phoenix Environmental, Inc. Power supply connector for a submersible pump and light source
WO2018160950A1 (fr) 2017-03-02 2018-09-07 Environment One Corporation Circuits de démarrage de moteur, ensembles de commande de moteur, et ensembles pompes broyeuses utilisant ceux-ci

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Publication number Priority date Publication date Assignee Title
US3247864A (en) * 1963-10-22 1966-04-26 Hydr O Matic Pump Co Sewage lift station
US4014475A (en) * 1976-01-30 1977-03-29 Environment/One Corporation Combined manway and collection tank for sewage grinder
US4437811A (en) * 1980-06-30 1984-03-20 Ebara Corporation Submersible pump with alternate pump operation control means
DE3418326A1 (de) * 1984-05-17 1985-11-21 Willi 4973 Vlotho Cordes Abwasser-pumpstation
US4739786A (en) * 1984-11-01 1988-04-26 Craig Parkinson Liquid level monitoring assemblies
WO1994026416A1 (fr) * 1993-05-11 1994-11-24 Environment One Corporation Pompe polyvalente broyeuse a eaux d'egouts a installation facile
US5324171A (en) * 1993-05-14 1994-06-28 Liberty Pumps Pump assembly including a hermetically sealed switch capsule for housing a magnetically actuated switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1972792A3 (fr) * 2007-03-17 2010-03-31 GARDENA Manufacturing GmbH Ensemble pompe submersible
CN107254910A (zh) * 2017-07-31 2017-10-17 山东中车华腾环保科技有限公司 适用分散型污水处理设施污水排放一体化提升设备及方法

Also Published As

Publication number Publication date
MX9704607A (es) 1997-10-31
AU4518496A (en) 1996-07-10
US5553794A (en) 1996-09-10

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